Answer: C. Combine credible evidence with commentary to support a claim
Explanation: The last sentence of the fourth paragraph is serving to combine credible evidence with commentary to support a claim. The author is pointing out that the government has spent a large amount of money on agricultural subsidies, but this money has never been used as a tool to improve the population's nutrition. This serves to support the author's argument that there needs to be a shift in policies to improve the health and nutrition of the population.